21304728

素因数分解:

$2^3\times 3^3\times {\mathrm{53}}^1\times {\mathrm{1861}}^1$

素因数の和:1929

約数の個数: 64

約数和(自身を含む): 60328800

約数和(自身を除く): 39024072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 53, 54, 72, 106, 108, 159, 212, 216, 318, 424, 477, 636, 954, 1272, 1431, 1861, 1908, 2862, 3722, 3816, 5583, 5724, 7444, 11166, 11448, 14888, 16749, 22332, 33498, 44664, 50247, 66996, 98633, 100494, 133992, 197266, 200988, 295899, 394532, 401976, 591798, 789064, 887697, 1183596, 1775394, 2367192, 2663091, 3550788, 5326182, 7101576, 10652364, 21304728]

約数ペア:

[(1, 21304728), (2, 10652364), (3, 7101576), (4, 5326182), (6, 3550788), (8, 2663091), (9, 2367192), (12, 1775394), (18, 1183596), (24, 887697), (27, 789064), (36, 591798), (53, 401976), (54, 394532), (72, 295899), (106, 200988), (108, 197266), (159, 133992), (212, 100494), (216, 98633), (318, 66996), (424, 50247), (477, 44664), (636, 33498), (954, 22332), (1272, 16749), (1431, 14888), (1861, 11448), (1908, 11166), (2862, 7444), (3722, 5724), (3816, 5583)]